Isn't that the shitty thing about human nature? At seemingly every turn, we collectively stand to benefit in huge ways if we could all just give a little, not feel as though our slice of the pie has to be bigger. But instead we travel down the same worn path, time and time again, even though it results in evermore pain, destruction, sadness and division. I always like Tool's "Right in Two" (the lyrics specifically) it articulated this concept very simply:
https://www.azlyrics.com/lyrics/tool/rightintwo.html